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Preparation method and application of carbon material-based nano wave absorbing agent

A technology of wave absorbing agent and carbon material, which is applied in the preparation and application field of nano wave absorbing agent based on carbon material, can solve the problem of narrow wave absorbing frequency band, achieve wide absorbing frequency band, strong electromagnetic wave loss capability, and broaden absorbing frequency band The effect of width

Pending Publication Date: 2020-09-15
SHENYANG RUBBER RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve the problem of narrow absorbing frequency band of existing absorbing materials, the absorbing agent prepared by the present invention integrates electromagnetic loss and absorbing agents, and condenses the multilayer structure into the absorbing agent in the micron range, which not only has good absorbing Strength, has good electric loss and magnetic loss effect on electromagnetic waves, and greatly broadens the absorption frequency bandwidth

Method used

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  • Preparation method and application of carbon material-based nano wave absorbing agent
  • Preparation method and application of carbon material-based nano wave absorbing agent
  • Preparation method and application of carbon material-based nano wave absorbing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: carry out according to the following steps.

[0027] (1): Preparation of dispersion A: Weigh 1 g of cobalt nitrate hexahydrate powder, disperse it in 100 ml of solvent methanol, add 20 mg of carbon nanotubes, and use a magnetic stirrer to stir at 500 r / min for 2 min. A dispersion liquid of cobalt nitrate and carbon nanotubes was prepared and set aside.

[0028] (2): Preparation of dispersion B: Weigh 1.32 g of dimethylimidazole, disperse it in 100 ml of methanol, and use a magnetic stirrer to stir at 500 r / min for 2 min to obtain a dispersion of dimethylimidazole ,spare.

[0029] (3): Add the above two dispersions A and B into an airtight container and mix them. After standing for 12 hours, the dispersion will be stratified. After filtering through a funnel with a sand core, take the purple solid substance and store it under the condition of 80 ℃. Dry and set aside.

[0030] (4): Put the purple powdery substance prepared in step (3) in a quartz boat, pl...

Embodiment 2

[0032] Embodiment 2: carry out according to the following steps.

[0033] (1): Preparation of dispersion A: Weigh 1 g of cobalt nitrate hexahydrate powder, disperse it in 200 ml of solvent methanol, add 100 mg of graphene, and stir at 500 r / min for 10 min with a magnetic stirrer to prepare Obtain the dispersion liquid of cobalt nitrate and carbon nanotube, set aside.

[0034] (2): Preparation of dispersion B: Weigh 1.32 g of dimethylimidazole, disperse it in 200 ml of methanol, and use a magnetic stirrer to stir at 500 r / min for 10 min to obtain a dispersion of dimethylimidazole ,spare.

[0035] (3): Add the above two dispersions A and B into an airtight container and mix them. After standing for 12 hours, the dispersion will be stratified. After filtering through a funnel with a sand core, take the purple solid substance and store it under the condition of 80 ℃. Dry and set aside.

[0036] (4): Put the purple powdery substance prepared in step (3) in a quartz boat, place i...

Embodiment 3

[0038] Embodiment 3: carry out according to the following steps.

[0039] (1): Preparation of dispersion A: Weigh 1 g of cobalt nitrate hexahydrate powder, disperse it in 200 ml of solvent methanol, add 30 mg of graphene, and stir at 500 r / min for 5 min with a magnetic stirrer to prepare Obtain the dispersion liquid of cobalt nitrate and carbon nanotube, set aside.

[0040] (2): Preparation of dispersion B: Weigh 1.32 g of dimethylimidazole, disperse it in 200 ml of methanol, and use a magnetic stirrer to stir at 500 r / min for 5 min to obtain a dispersion of dimethylimidazole ,spare.

[0041] (3): Add the above two dispersions A and B into an airtight container and mix them. After standing for 12 hours, the dispersion will be stratified. After filtering through a funnel with a sand core, take the purple solid substance and store it under the condition of 80 ℃. Dry and set aside.

[0042] (4): Put the purple powdery substance prepared in step (3) in a quartz boat, place it in ...

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Abstract

The invention provides a preparation method and application of a nano wave absorber based on a carbon material. The method is mainly characterized by comprising the following steps: preparing two dispersion liquids A and B, adding a carbon material, and dispersing by using a magnetic stirrer for later use; blending the dispersion liquid A and the dispersion liquid B, standing for 12 hours, carrying out suction filtration separation, and drying a purple solid substance at 80 DEG C for later use; and introducing argon into the prepared purple powdery substance, heating to 900 DEG C, keeping thetemperature for 120 minutes, and naturally cooling to room temperature to obtain the carbon material-nano carbon cage-cobalt nano magnetic particle wave absorber. According to the invention, the waveabsorber is blended with a chloroprene rubber, an ethylene propylene rubber, a silicone rubber, an epoxy resin and the like, so that the nano composite electromagnetic wave-absorbing material can be prepared on a large scale; and the wave absorber has the advantages that the problem that the wave-absorbing frequency band of an existing wave-absorbing material is narrow is solved, various wave-absorbing structures are concentrated in the same nano wave-absorbing agent, the wave-absorbing material has good electric loss and magnetic loss effects on electromagnetic waves, the wave-absorbing frequency band width is widened, and the wave-absorbing strength is improved.

Description

technical field [0001] The invention relates to a preparation method and application of a carbon material-based nano wave absorbing agent. Background technique [0002] There is no relevant report at home and abroad on the preparation method of the composite structure wave absorbing agent of carbon material-nano carbon cage-cobalt nano magnetic particles. The research background of the present invention will be introduced below. [0003] Stealth technology is a high-tech emerging in the development of modern weapons and equipment, which involves aerodynamics, material science, optics, electronics and many other disciplines. In recent years, the appearance stealth technology has made slow progress in recent years, and seems to have approached the ceiling, while the research on stealth material technology has developed rapidly. The ability of a substance to absorb electromagnetic waves depends on two parameters, the permittivity and the magnetic permeability. Both describe t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L11/00C08L83/04C08L23/16C08L63/00C08K13/06C08K3/04C08K9/10C08K3/08
CPCC08K13/06C08K3/041C08K9/10C08K3/08C08K3/042C08K2201/01C08K2201/011C08K2003/0843C08L11/00C08L83/04C08L23/16C08L63/00
Inventor 姚秀超于雅洁牛继辉邹永振胡东唤
Owner SHENYANG RUBBER RES & DESIGN INST CO LTD
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